Many runners have a difficult time pulling their foot from the ground. Many times extra emphasis needs to be placed on pulling in order to learn it properly. If you need help perceiving when to pull your foot from the ground, the EZ Run Belt could help you achieve that. You can also run with stretchcordz attached to your ankles while you pull up, the EZ Run Belt however is a more efficient approach to doing so.
The belt features 2 ankle straps, 4 resistence tubes (2 green - easy, and 2 red - difficult), and a waist belt that is adjustable. More information on the belt can be found on Joes Spark's website http://members.toast.net/joe.sparks/pose%5Cezrunbelt.html.
If you do perform these exercises we recommend that you run with the belt on, then off to feel the difference in your perception of pulling.